5 - SIG 357 is a far better penetrator, especially against glass and heavy clothing. It's just a better overall, all-purpose pill for the serious shooter who carries for a living.

... and there is no denying any of the above. There are multiple sources available that support my contention.

The two advantages 9mm holds over SIG 357 are higher capacity mags and less recoil. And I typed all of the above as a true advocate of 9mm (which I carried for many years), especially with modern pills. But still, 9mm does not compare favorably to SIG 357.